Steering device.



A. ANDERSON.

l STEERING DEVICE.

APPLICATION FILED JUNE I2. I9I5.

Patented Feb. 12, 1918.

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STEERING DEVICE.

' APPLICATION man :uns 12. 1915.

1,256,283. Patented Feb.12,1918.

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pole to the axle,

.AXEL ANDERSON, OF ST. PAUL, MINNESOTA, ASSIGNOR T0 RUSSELL GRADER MANU-FACTURING C0., OF MINNEAPOLIS, MINNESOTA, A CORPORATION.

STEERING DEVICE.

Specification of Letters Patent.

Patented Feb. 1.2, 1918.

Appucation med June 12, 1915. serial No. 33,711.

The principal object of the invention is to provide a steering mechanismwithin control of a person on the malchme for shifting the angle of thedraft pole without stopplng vthe machine. i

Other objects of the invention will appear from the following detaileddescription:

The invention consists generally in various l constructionsandcombinations, all as hereinafter described and particularly pointedout in the claims.

In the accompanying drawings forming part of this specification, l

-Figure l is a side elevation of a grading machine with my inventionapplied thereto,

Fig. 2 is a front view with the pole removed,

Fig.` 3 is a horizontal sectional .view through the forward portion ofthe machine, illustrating the manner of attaching the Fig. 4 is atransverse IV -sectional view through the pole and the screw and wormshifting `mechanism thereon,

Fig. 5 is a detail view, showing themanner of mounting the worm and wormwheel on thepole.

In the embodiment of the invention shown in the drawings, 2 representsthe frame 0f the grader, having axles 3 and 3", and carrying the wheels4' and 4a. yoke 5 is preferably mounted on the horizontal axle 3. isarched over the middle portion of the same, and isprovided with a plato6 seated on the middle portion of the yqke and having its endsoverhanging brackets 7 that are secured to the axle andthe ends of theyoke. A rocker 8 is supported on the arched.

middle portion of the yoke 5 and a kingbolt 9 passes down through theforward portion ofthe frame 2 and through the rocker and yoke and isseated on the axle. A plate 10 is preferably interposed between the yokeand rocker and has a hole therein through which the'king-bolt passes.This plate is provided with loops l1 to receive a T-head l2 on which thetongue 13 is secured. The plate 10 is free to swine with the tongue toany desired angle with respect to the forward axle and through thisplate the draft on the tongue is transmitted to the king-bolt. A clamp14 is secured by suitable means, such as a bolt 15, to the draft tongueand has a bracket 16 provided with bearings 17 for the "rodY 18 that issplined in a worm 19 between the bearings 17. When, therefore, the rod18 is revolved, the worm will be revolved also, while the rod is free toslide lengthwise in the worm independent of its revolving movement.

The tongue 13 is preferably made of tubing having a telescoping section20 at its outer end that is adjustable lengthwise with respect to themain portion of the tongue by means of a bolt 21 fitting holes 22 and 23in the tongue and extension. The upper portion of the clamp 14 has astud 24 thereon' whereon a worm gear 25 is mounted, its teeth-meshingwith the worm 19. Upon this worm gear a ,sheave 26 is mounted,preferably integral with the gear, its upper sur.-

face being preferably Hush substantially with the to of the stud andsecured thereon by sita le means, as the screw 27 and washer 28. Theface of thesheave 26 has` lugs 29 thereon to engage the links of a chain30 which passes around" the sheave and has its ends attached to rods 31pivotally connected to bolts 82 mounted in the brackets and the plate 6.These rods and their flexible connections, engaging the lugsof thesheave 26, operate to hold the forward axle parallel with the rear axleand compel the wheels to run in a direction parallel with the line ofdraft of the machine' but in staggered relation with respect theret'o.Turn buckles 33 are preferably mounted in the rods 31 to take up theslack lin the chain and obtain the desired degree of tension between thesheave 26 and the connec.

tions of the rods 31 with the axle. The rear end of the rod 18 has acoupling 34 connecting it to a rod 35 which has bearings in a bracket 36and is coupled to a. steering rod 37 extendingto the rear portion of themachine and provided' with a suitable steering l wheel 38 withinconvenient reach of the `op erator of the machine standing 'upon a.platmachine,

... y :ansetzen form 39., The bracket 36 is loosely mounted on thehing-bolt to allow it to oscillate liori= zontally and accommodateitself and the steering rod to the dierent-positions o the i wheels,

and maintain any desired angle between the forward axle and the tonguein guiding the it being understood, of course, that wherever adjusted,the tongue will be locked l by the worm and gear wheel and theirconnection with the forward axle. p

l have shown this invention applied to a kgrading'machine having asuitable scraper 'll claim as my invention:

blade 4Q() supported by the machine trame between the forward and rearaxles, but it willhe understood to be applicable to other.

machines where it is desired to operate them in an odset or staggeredrelation with respect to the motive power.

'llhe details of the construction may be varied in many particularswithout depart* ing from my invention.

ll. 'lhef combination, with a machine Yframe having forward and rearaxles and carrying wheels,ot a yoke mounted on the forward axle, arocker supported by said yoke, a plate seated on said rocker, bracketsmounted on said axle beneath said plate, a kingloolt passing throughsaid rocker and yoke, a draft tongue pivotally connected with saidking-bolt,l exible means connected .with said plate and brackets onopposite sides of said hing-bolt, means mounted on said tongue andengaging said exible means for swinging said tongue horizontally tochange the direction of dratt thereof and locking it at any desired`angle with respect to said axle. f

2. The combination with a machine frame having forward and rear axlesand carrying Wheels, ot' 'a draft tongue having a pivotal connectionwith thevforward axle, a plate supported by said axle and having itsends extending in proximity to the forward carrying Wheels, meanssupporting the ends ot said plate, Hexible means connected with saidplate on oppositey sides of its center, and means mounted on said tongueand en-v gaging said :flexible means for swinging said tonguehorizontally to change the direction of draft thereof and locking it atany, desired angle with respect to said axle.

ln Witness whereof, ll have hereunto set my hand this 31st day otll/lay, i915.,

AXEL ANDERSON.

